envision-sdk

Envision SDK

Getting started

package.json

You can put informations in your package.json, will be used for marketplace interface in Envision

{
  "name": "envision-nes",
  "author": "Florian H-J",
  "main": "index.js",
  "envision": {
    "name": "NES Emulator",
    "icon": "https://upload.wikimedia.org/wikipedia/commons/3/30/Nes_controller.svg",
    "category": "games",
    "description": "Emulator of Nintendo NES, controllable from any computer (WS remote) to play with 2 colleagues.",
    "screen": true,
    "config": true
  }
}

index.js

Your main file, specified in package.json

const EnvisionModule = require('envision-sdk')

class MonSuperModule extends EnvisionModule {

  /*
    Functions needed for starting
  */

  // Called when module is initialized, by envision start or installing
  onStart (server, cb) {
    //server is `express()`, you can handle other routes if needed
    return cb()
  }


  // Called when dashboard is stopped or system shutdown
  onStop (cb) {
    console.log('Good bye!')
    return cb()
  }


  /*
    Express handler, refer to https://expressjs.com/en/4x/api.html for API
  */

  // Route for settings (on your computer)
  onRemote (req, res) {
    res.send('We are on a remote client')
  }

  // Route for envision system, displayed on screen
  onLocal (req, res) {
    res.send('We are on envision dashboard')
  }
}

exports = new MonSuperModule()

Methods

this.setDashboardUrl(<url>)
this.getDashboards(cb)
this.getModules(cb)
this.getDashboardInfos(cb)
this.pushNotification(<type(error)>, <text>)

Serve static files

You can override express functions

const express = require('express')

class MonSuperModule extends EnvisionModule {
  onStart (server, cb) {
    this.onRemote = express.static('remote')
    cb()
  }
}

Add routes

Example with POST upload route for remote configuration

const remoteRouter = express.Router()

var upload = multer({ dest: process.env.HOME + '/' })

remoteRouter.get('/', (req, res) => {
  res.sendFile(__dirname + '/remote.html')
})

remoteRouter.post('/upload', upload.single('file'), function(req, res) {
  let source = fs.createReadStream(req.file.path)
  let destination = fs.createWriteStream(process.env.HOME + '/video.mp4')

  source.pipe(destination, { end: false });
  source.on("end", function(){
      fs.unlinkSync(req.file.path)
      res.send('Good!')
  })
})

class MonSuperModule extends EnvisionModule {
  onStart (server, cb) {
    console.log('started')
    this.onRemote = remoteRouter
    return cb()
  }
}

API

EnvisionModule contains API to make some actions on Envision

setDashboardUrl

Can set Envision interface to a specific URL

Example:

this.setDashboardUrl('https://keymetrics.io/')

getDashboards

List all dashboards in your internal networks NB: development and production dashboards are separated.

Example:

this.getDashboards(dashboards => {
  dashboards = [
    {
      "port": 3110,
      "host": "192.168.0.138",
      "infos": {
        "ip": "192.168.0.138",
        "version": "0.2.34",
        "hostname": "florian-debian",
        "name": "florian-debian",
        "uptime": 417300
      }
    }
  ]

})

getModules

List all modules installed in current Envision system

Example:

this.getModules(modules => {
  modules = [
    {
      "id": "envision-nes",
      "name": "NES Emulator",
      "icon": "https://upload.wikimedia.org/wikipedia/commons/3/30/Nes_controller.svg",
      "author": {
        "name": "Florian H-J"
      },
      "version": "1.0.9",
      "category": "games",
      "description": "Emulator of Nintendo NES, controllable from any computer (WS remote) to play with 2 colleagues.",
      "screen": true,
      "config": true,
      "status": "online",
      "linked": true
    }
  ]

})

getDashboardInfos

Get current informations about current Envision system

Example:

this.getDashboardInfos(infos => {
  infos = {
    "ip": "192.168.0.138",
    "version": "0.2.34",
    "hostname": "florian-debian",
    "name": "florian-debian",
    "uptime": 417803
  }
})

pushNotification

Send notification to Envision interface NB: if sound is at 0%, notification sound is not played

Example:

this.pushNotification('confirm', 'Success!', () => {
  console.log('Notification sent')
})